While I was messing around with an older SSD test system I wondered why the machine's performance was SO sluggish with the NVIDIA card I just installed. Windows startup, desktop, Internet, everything in Windows would just be incredibly slow. This is an old dual-core machine, but it ran perfectly fine with the AMD Radeon card I used before.

At first I blamed NVIDIA, but when I opened Task Manager I noticed one of my cores sitting at 100%—that can't be right. Digging a bit further into this, it looks like RadeonSettings.exe is using one processor core at maximum 100% CPU load. Ugh, but there is no AMD graphics card installed right now.